Health experts say it’s still too early to gauge with absolute certainty the impact of antibodies on Covid-19 and whether they will guard against reinfection long term, “but we have to hang our hat on something,” said Dr. George Dempsey of East Hampton Family Medicine.

The committee agreed at its first meeting last week to “make sure we don’t have a second wave” of Covid-19 infection “by opening too soon, by being careless when we open, by not looking at social distancing,” said Deputy Town Supervisor Sylvia Overby.